index

Pressure Temperature Rating as per ASME/ANSI B16.34

A 217 WC6(j)

A 182 F12(c)

Notes :

(c)

Permissible but recommended for prolonged usage above about 1100° F.

(j)

Not to be used over 1100° F.

STANDARD CLASS
Temperature° F	Working Pressure by Classes PSIG
Temperature° F	150	300	400	600	900	1500	2500
-20 to 100	290	750	1000	1500	2250	3750	6250
200	260	710	950	1425	2135	3560	5930
300	230	675	895	1345	2020	3365	5605
400	200	660	880	1315	1975	3290	5485
500	170	640	855	1285	1925	3210	5350

600	140	605	805	1210	1815	3025	5040
650	125	590	785	1175	1765	2940	4905
700	110	570	755	1135	1705	2840	4730
750	95	530	710	1065	1595	2660	4430
800	80	510	675	1015	1525	2540	4230

850	65	485	650	975	1460	2435	4060
900	50	450	600	900	1350	2245	3745
950	35	380	505	755	1130	1885	3145
1000	20	225	300	445	670	1115	1860

1050	20(1)	140	185	275	410	684	1145
1100	20(1)	95	130	190	290	480	800
1150	20(1)	50	70	105	155	260	430
1200	15(1)	35	45	70	105	170	285

	Gate Valve

	Globe Valve

	Non Return Valve

	Ball Valve

	Butterfly Valve

	Diaphragm Valve

	Strainer Valve

	Needle Valve

Notes :

1.	For welding end valves only. Flanged ends ratings terminate at 1000° F.

SPECIAL CLASS
Temperature° F	Working Pressure by Classes PSIG
Temperature° F	150	300	400	600	900	1500	2500
-20 to 100	265	750	1000	1500	2250	3750	6250
200	290	750	1000	1500	2250	3750	6250
300	290	750	1000	1500	2250	3750	6250
400	290	750	1000	1500	2250	3750	6250
500	290	750	1000	1500	2250	3750	6250

600	290	750	1000	1500	2250	3750	6250
650	275	720	960	1440	2160	3600	6000
700	265	690	920	1380	2070	3450	5750
750	255	665	885	1330	1995	3320	5535
800	245	635	845	1270	1905	3170	5285

850	235	610	810	1220	1825	3045	5070
900	215	560	750	1125	1685	2810	4680
950	180	470	630	945	1145	2360	3930
1000	105	280	370	560	835	1395	2320
1050	65	170	230	345	515	860	1430

1100	45	120	160	240	360	600	1000
1150	25	65	85	130	195	320	535
1200	15	45	60	85	130	215	360